An integrated AC electrokinetic pump in a microfluidic loop for fast and tunable flow control

文献信息

发布日期 2004-08-09

DOI 10.1039/B408382M

影响因子 4.616

作者

Armand Ajdari

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摘要

We have built a dedicated lab on a chip to study the performance of an integrated electrokinetic micropump, driven by a low voltage AC signal. This micropump consists of an array of interdigitated electrodes and is here integrated in a microfluidic loop. We demonstrate that this device can pump continuously and reproducibly electrolyte solutions of low to moderate ionic strength. The pumping speed reaches up to 500 µm s−1 in 20 µm deep and 100 µm wide channels with a driving signal in the 1–10 kHz range and an amplitude of only a few volts. In addition, we have observed an interesting reversal of the pumping direction at higher frequencies (50–100 kHz). Our device permits a systematic and automated exploration of the influence of the ionic strength thanks to an integrated micromixer.

期刊推荐

Atomization and Sprays

Acta Metallurgica Sinica-English Letters

Bioorganic & Medicinal Chemistry

Chinese Journal of Chemistry

Journal of the Indian Institute of Science

Herald of the Russian Academy of Sciences

Biocatalysis and Biotransformation

Electroanalysis

Heteroatom Chemistry

Colloid Journal

来源期刊

Analyst

CiteScore: 7.8

自引率: 5.6%

年发文量: 653

Analyst publishes analytical and bioanalytical research that reports premier fundamental discoveries and inventions, and the applications of those discoveries, unconfined by traditional discipline barriers.

An integrated AC electrokinetic pump in a microfluidic loop for fast and tunable flow control

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